1500W bidirectional transient suppressor — what it protects
The 1.5KE82CA-T: It clamps at 113 V max with a 70.1 V reverse standoff and a 77.9 V minimum breakdown — meaning it stays transparent on a 70 V rail but starts conducting just under 78 V, shunting the transient before it reaches the downstream silicon. The bidirectional channel means a single device handles both positive and negative surges — useful on AC lines or floating DC buses where polarity is not fixed. The 13.3 A peak pulse current (Ipp at the 10/1000 µs test pulse) gives the thermal budget for a typical lightning or inductive-load dump event.
Package and board integration
Housed in a DO-201AA / DO-27 axial-lead package, the 1.5KE82CA-T is a through-hole part — the leads pass through the board and are soldered on the opposite side. The -T suffix indicates Tape & Reel packaging — the axial leads are taped for automated insertion, not bulk or ammo pack.
Sourcing reality — obsolete part, active market
The part remains available through independent surplus and broker channels. Stock is lot-specific and confirmed at RFQ; the DO-201 footprint is common enough that a cross-reference to another 1.5KE82 bidirectional from the same or a different brand may be possible — the buyer should verify the clamping voltage and breakdown tolerance against the BOM requirement.